72396638 divided by 400 
We want to divide 72396638 by 400.

Let's proceed to step 1:
When dividing 7 by 400, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 400

Moving on to step 2:
The number 400 fits into 72 0 times, leaving a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Fetch the next digit (3) from the dividend, attach it to 72 and continue: 723 / 400

On to step 3:
When dividing 723 by 400, we get 1 with a remainder of 323.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 400 from 723 and we're left with 323.
Include the next digit (9) from the dividend after 323, then repeat: 3239 / 400

Advancing to step 4:
If we divide 3239 by 400, we get 8 and a remainder of 39.
Write down 8 as next digit of the result. 
Result so far: 18.0
The remainder is 39 after subtracting 3200 from 3239.
Append the next digit (6) from the dividend to 39 and continue with: 396 / 400

Going ahead to step 5:
If we divide 396 by 400, we get 0 and a remainder of 396.
The next digit of our result is 0. 
Result so far: 180.0
If we take 0 away from 396, we end up with 396.
Grab the next digit (6) from the dividend, add it to 396, then carry on: 3966 / 400

Let's proceed to step 6:
400 can be fit into 3966 9 times, resulting in a remainder of 366.
Use 9 as the next digit of our solution. 
Result so far: 1809.0
Deduct 3600 from 3966 and we're left with 366.
Grab the next digit (3) from the dividend, add it to 366, then carry on: 3663 / 400

Advancing to step 7:
400 goes into 3663 9 times with a remainder of 63.
Use 9 as the next digit of our solution. 
Result so far: 18099.0
If we take 3600 away from 3663, we end up with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 400

Step 8:
400 goes into 638 1 times with a remainder of 238.
The number 1 becomes the next digit in our result. 
Result so far: 180991.0
If we take 400 away from 638, we end up with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Moving on to step 9:
400 goes into 2380 5 times with a remainder of 380.
Record the quotient 5 as the next digit in the result. 
Result so far: 180991.5
If we take 2000 away from 2380, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 10:
The number 400 fits into 3800 9 times, leaving a remainder of 200.
Write down 9 as next digit of the result. 
Result so far: 180991.59
Subtracting 3600 from 3800 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 11:
400 goes into 2000 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 180991.595
Deduct 2000 from 2000 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
When dividing 0 by 400, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 180991.595
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 13:
If we divide 0 by 400, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 180991.595
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 180991.595, with a leftover of 0.0.